Home / 280,091,421.40-419,853,696.90-165,016,730.20

Finding the Fourth Proportional to 280,091,421.40, 419,853,696.90 and 165,016,730.20

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Solution

The fourth proportional to 280,091,421.40, 419,853,696.90 and 165,016,730.20 is: 247,358,108.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,091,421.40 : 419,853,696.90 = 165,016,730.20 : x
  2. Step 2: Convert to fraction form
    280,091,421.40/419,853,696.90 = 165,016,730.20/x
  3. Step 3: Cross multiply
    280,091,421.40x = 419,853,696.90 × 165,016,730.20
  4. Step 4: Simplify right side
    280,091,421.40x = 69,282,884,224,819,864
  5. Step 5: Solve for x
    x = 69,282,884,224,819,864/280,091,421.40
  6. Step 6: Final answer
    x = 247,358,108.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.